linux-kernel - Re: m68k Kconfig warning

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMuHMdW1iqNkmCztAv93W4eLR5ooxh5m+vRLJHJmCfrjsOmc5g@mail.gmail.com>
Date:   Mon, 2 Dec 2019 14:32:28 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Kars de Jong <karsdejong@...e.nl>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: m68k Kconfig warning

Hi Kars,.

On Mon, Dec 2, 2019 at 12:42 PM Kars de Jong <karsdejong@...e.nl> wrote:
> Op wo 27 nov. 2019 om 08:12 schreef Geert Uytterhoeven <geert@...ux-m68k.org>:
> > On Wed, Nov 27, 2019 at 2:27 AM Randy Dunlap <rdunlap@...radead.org> wrote:
> > > Just noticed this.  I don't know what the right fix is.
> > > Would you take care of it, please?
> > >
> > > on Linux 5.4, m68k allmodconfig:
> > >
> > > WARNING: unmet direct dependencies detected for NEED_MULTIPLE_NODES
> > >   Depends on [n]: DISCONTIGMEM [=n] || NUMA
> > >   Selected by [y]:
> > >   - SINGLE_MEMORY_CHUNK [=y] && MMU [=y]
> >
> > This has been basically there forever, but working.
>
> The reason for SINGLE_MEMORY_CHUNK depending on NEED_MULTIPLE_NODES is
> historic due to the way it is implemented.
> I played with it this weekend and I got a working version of FLATMEM,
> which can replace SINGLE_MEMORY_CHUNK.

Nice, thanks!

> step might be to replace DISCONTIGMEM with SPARSEMEM (since
> DISCONTIGMEM has been deprecated).

Mike Rapoport has patches for that:
"[PATCH v2 0/3] m68k/mm: switch from DISCONTIGMEM to SPARSEMEM"

Unfortunately they're not on lore, and there were some issues with them.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds